A biologist discovers two populations of wolf spiders whose members appear identical. Members of one
population are found in the leaf litter deep within the woods. Members of the other population are found in the
grass at the edge of the woods. The biologist decides to designate the members of the two populations as two
separate species. Which species concept is this biologist most closely utilizing?
A) ecological
B) biological
C) morphological
D) phylogenetic
a